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thankyou pranam for your reply.
i have used my chip in another project board of different manufacturer and i was successfull in programing a sample program using bootloader software.Also, i tried a serial communication sample program and the serial ports are working .
A 20 MHz crystal...
hello,
i have purchased a PIC project board from http://www.nskelectronics.com/pic-p40_brd.html (schematic of the board is given in it ). so, i have tried some test projects and everything is working correctly , including serial communication. so, i programmed my PIC16f877A with bootloader using...
still not working.should we give at command ATE0 at the beginning to avoid echo from the gsm.
Also,should we connect the ground of gsm modem to ground of microcontroller (my friend told me this). i have given supply to gsm modem.so, no need to do it right ?
what does the functions command_mode() and busy() do in the code posted by jeevan007 ??
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what does the functions command_mode() and busy() do ??
i am working on the same project ,but doesnt uses lcd.
i am using atmel AT89S52 ,SIM300 gsm modem . i just want to send a sms from the GSM modem without using pc.here is my code-
#include<reg51.h>
void serialcomm()
{
TMOD=0x20; // Mode=2
TH1=0xfd; // 9600 baud
SCON=0x50; // Serial mode=1 ,8-Bit data,1 Stop bit ,1 Start...
I am working on a embedded project using GSM SIM300.i am using Atmel at89s52, GSM module ,temperature sensor LM35.
Working of project- Temp sensor will sense the temperature and sent a message to my cell phone only if the temperature is above 30^c,,and if i sent a SMS to the cell phone(for...
ok
here i am using a 11.0592mhz crystal oscillator.so,does the below delay() function works to give msec delay?
void MsDelay(unsigned int value)
{
unsigned int x, y;
for(x=0;x<1275;x++)
for(y=0;y<value;y++);
}
Send_string("Tempertaure="); Send_string(my_char_temp);
delay(500);
serial()
will the message comes like-Temperature=40' ?
what is the need of calling function serial() at the end ?
Thank you so much for your reply.
As i said already,my GSM modem should send message to user's phone when any one of the sensor values decreases below certain value.the message should contain the sensor values.
for eg-i am using a temp sensor LM35.If the temp value increases above 40*c,a message...
i am doing a project on gsm based irrigation system.i am using at89s52 uc and sim300 gsm modem.
here i am interfacing 3 sensors ,and accordingly it will send sms to users mobile when any one of the sensor values decreses below some value.also,we can check the condition of the field at any time...
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